The Great War Riddle

Did they tell my precious children about the war we fought?
In the fray, King Red did say, I order the onslaught.
A final fight, of tempered might, to settle this old dispute,
Men cried for their holy king, who donned his armored suit.
Once he showed his deep red robe, he fought the enemy,
Nay other men, nor two nor three, could cause any entropy.
Did they tell my precious children about the Kings disgrace?
Some King was he, who lost to thee, the victor without a face.